Power take-off mechanism



June 15 1926.

E. R. BARRETT POWEJIR TAKE-OFF MECHANISM Filed Sept. 22, 1924 2Sheets-Sheet l Inucmov EdwowdR.BarYni (-Hfovnm June 15,1926. 1,589,093

E. R. BARRETT POWER TAKE -OFF ME GHANI S M Fil ep 22 1924 2 Sheets-Sheet2 6 invention is directed to novel mechanism "Patented June 1-5, .1926.

-gUNlTED sTAmss :PATEINT" OFFICE.

IEDWARD .R. BARRETT, F DETROIIQMICHIGA-N, :ASSTGNOR T0 WOOD iHYDRAULIClI-IOIST AND BODY COMPANY, .01 IDETBOIT,..1MICHIGAN EACORPORATION".ZOF'IMIGHI- GAIN.

POWER.TTAE=OFF.LMEGHALNISM.

Applieationifilediseptemberi 22,.1924. I Seriallillo. 738,985.

This invention relates to a power ;takeoff adaptedto be applied to.a'transmission gearing of the selective speed typesuchias is used inmotor vehicles, and the ;present and construction whereby .apumpftorpumping oil to a body dumping hoist maybe: op-

is directly driven by the engine inservice.

2 plete the installation.

Vin s.' '%he transmissiongearing is enclosed .in:.a

plane of line 33,'of Fig. 1.

The present invention is designedtotake advantage of a well knownand-standard type of transmission gearing, the power take-ofi' beingapplied at one side of the'casing .for the gearing and connection beingmade with the. reverse idler of the gearing; itbeing necessary-only tomachine a'sin'gle hole through the transmission casing and then attachthe power take-01f device to com- This makes a very simple and effectivepower take-ofi andzone very durable and efiicient for the purposes whichit is to serve.

For an understanding of the invention, reference may be had to thefollowingrdescription, taken in connection with-the accompanyingdrawings, in which,

Fig. 1 is a fragmentary horizontal section "through the power take-ofldevice and an adjacent part of the transmission.

Fig. 2 is a verticalsection taken substan tially onthe plane of line.2-2, offFig. 11.

'Fig. 13 is a vertical. section taken on the Fig. 4 is a plan'view ofthemember'whic carries the reverse idler pinion, and

Fig. 5 is a section taken on the planewof line 5-5, of Fig.4. Likereference characters refer to like parts. in the different figures ofthedrawsuitable casing .1 and includes a. counter .shaft2 on whichtheshiftable gears oneof which is shown at 3, are mounted. This gear orpinion 3 isv adapted tobe moved intomesh with the reverse idler pinion4; whichisro- 'tatably mounted ona short shaft carried :by and betweentwo spaced 1 apart ears or. lugs '6 cast integral with.andiprojecting'from .a base 7. An openingxis made through aside of thetransmission casing 1 andthe-ears'or ,lugs inserted therethrough, thebase '7 completely closing the opening and extending passed through theopenings adjacent the at. its edges beyond'theopening. .TjThisiisaan oldtype of transmission gearing and'in practice .the plate7 issecured tothe'side of the transmission casing .by set screws edgesiof the plate asshown inFig. 4.

Whentthe power take-ofi' of my invention is applied, an elongatedopening 8 is me. chined through the plate adjacn't the pinion 4. Thepower take ofi includes a'number of shafts and pinions housedinasuitablecas- .ingt9 which issecured to the-side ofthetransmission;casing by bolts and setscrews I10 which also pass throughthe" openings .de-

. scribed. in 'plate"7 ,1 thereby securingbtheiplate between thetransmission and powertake-ofi casings. ".Twoshaftsll. and'1 2 arerotatably mounted. in the. casing 9,the latterhavingza;gear.13..-rotatabl .imounted thereonfwhich extendsithroughrt e opening8 in plate? S0188 to engage with theidlerreverse pinion :4. On the.shaftll a: sliding agear .lis. splined land is .adaptedto bemove'dinto'or out of mesh withthegear 13. A shifter rod is ;.asindicated'.at..15to which a yoke'lfiwithin thecasing 9.,isi'pcrmanently connected,the yoke engaging with. the ear. 141 so that it may be shifted .on'thesaft L11' With'the imovements .offltheshifter rod. .Anysuitableanualoperation .meansqmay. be used. for the "m oftheshifter rod. 1.

;-slidably mounted parallel to theshaft 11, I

Shaft 11 extends threu'gh and a'distanceitotdriveza' pump :of the. geartypeor like that :shown .in zUnited States Patent ':No.

1,271,968, :issuedj July 9,1918, to GarfieldA.

lWood. "LThis pump is housed in thehousing 17 into :whichcshaft v11passes told'riveflthe pump and :there .are suitable conduits 18.andi.l9ffor.carrying the liquid, usually oil,

*whichis .usediandwhi'ch in practice" is used ,.der.such conditions,this causing..gear.13 to bexrotated. continuously so long-as theengineisrunning. Tocause thepump to be driven it isrmerely necessary'tooperatetheshifter :beyond. the casingf9? atone end and serves cks orlike I rod to move gear 14 into engagement with only machinin the gear13, whereupon the pump will be continuously driven.

The construction descrlbed is very effective in operation andexceptionally simple to install on the transmission casing, thenecessary being to cut the opening 8 in tie base plate 7 of thetransmission casing. WVhen this is done, the

ower take-oft mechanism can be installed y simply properly placing itscasing and inserting the connecting set screws or bolts 10, whereuponthe installation is complete, the plate 7- and attached idler pinioneing secured and roperly positioned with the attachment 0? the powertake-offv casing. The construction is durable and fully capable ofwithstanding the severe service regear easing located against said baseplate,

means for securing the gear casing to the transmission casing with thebase plate interposed between, two shafts mounted in said gear casing, agear on one shaft extending through the opening in said base plate andmeshing with said pinion, a second gear splined on the'second shaft, ashifter ro'd slidably mounted in said gear casing, and a yoke attachedto the 1'0 and operatively connected with the second gear for slidablymoving the same on reciprocation of the rod to move the second gear intoor out of engagement with the first gear, substantially as described.

2. In combination, a transmission gearing casing havin anopening in aside thereof, a plate provided with two spaced apart ears,

gearing, said plate having an opening made therethrough between theears, a second gear casing located against the plate, means for securingthe second gear casing to the transmission gearing casing with the plated1s posed therebetween, two shafts mounted in the second gear casing, agear on one of the shafts extending through the opening in the plate andmeshing with said idler pinion, a second gear splined on the othershaft, and means for moving the second gear on its shaft to bring itinto and out of engagement with the first gear, substantially asescribed.

3. In combination, a transmission casing having gears therein and .anopening in a side thereof, a base plate to cover said opening and havingan opening through it, a pinion rotatably mounted on said base plate andlocated within said transmission casing and meshing with a gear therein,a power take-off gear casing located against said base plate, means forsecuring said power take-01f gear casing to the transmission casing withthe base plate betwen them, and a gear in the power take-0E gear casingextending through the opening in the base plate and meshing with thepinion mounted on the base late.

4. In com ination, a transmission casing having an opening in one sidethereof and gears therein, and a power take-off mechanism locatedadjacent said. opening and having a pinion extending through saidopeningand meshing with a gear in the transmission easing, anintermediate gear in the power take-off mechanism meshing with saidpinion, a power shaft, a gear slidably mounted on said power shaft andmeans for sliding said gear on said shaft into or out of mesh with saidintermediate gear.

In testimony-whereof I afiix my signature.

EDWARD R. BARRETT.

